Are you going to be using your own car to learn in ontop of your lessons? If not, then just wait until your nearly test ready to buy a car.
for a first car, don’t get something on finance. Get an older, cheap run around that you can drive around in without worrying too much about bumping it - you Only truly start to really learn to drive once you’ve passed your test and are out driving on your own so you want something you can just potter around in and really get to grips with driving in. Look at an old style Clio,KA,Micra,Fiesta etc
Even if you spent £1000 on an older car and get a year or so driving out of it that’s going to be better than financing an expensive new car.